21220110010010 has 8 divisors (see below), whose sum is σ = 38196198018036. Its totient is φ = 8488044004000.

The previous prime is 21220110009977. The next prime is 21220110010013. The reversal of 21220110010010 is 1001001102212.

It can be written as a sum of positive squares in 2 ways, for example, as 21220109427841 + 582169 = 4606529^2 + 763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21220110009973 and 21220110010000.

It is not an unprimeable number, because it can be changed into a prime (21220110010013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061005500491 + ... + 1061005500510.

Almost surely, 2^{21220110010010} is an apocalyptic number.

21220110010010 is a deficient number, since it is larger than the sum of its proper divisors (16976088008026).

21220110010010 is a wasteful number, since it uses less digits than its factorization.

21220110010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122011001008.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21220110010010 its reverse (1001001102212), we get a palindrome (22221111112222).

The spelling of 21220110010010 in words is "twenty-one trillion, two hundred twenty billion, one hundred ten million, ten thousand, ten".